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Intermediate low-loss low-temperature co-fired ceramic material and preparation method thereof

A low-temperature co-firing and glass-ceramic technology, applied in the field of low-temperature co-firing ceramic materials, can solve the problems of restricted use and high sintering temperature

Active Publication Date: 2021-09-24
SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Ba 2 Ti 9 o 20 The dielectric constant of microwave materials is 39-40, which has a high quality factor, but the sintering temperature is too high (1350-1400°C)
To Ba 2 Ti 9 o 20 Adding low softening point glass to microwave materials can effectively reduce the sintering temperature, but the addition of glass will increase the dielectric loss and resonance frequency temperature coefficient of the material system, thus limiting the use

Method used

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  • Intermediate low-loss low-temperature co-fired ceramic material and preparation method thereof
  • Intermediate low-loss low-temperature co-fired ceramic material and preparation method thereof
  • Intermediate low-loss low-temperature co-fired ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Ba in this example 2 Ti 9 o 20 Based on the low-temperature co-fired ceramic material, based on the total amount of raw materials for its preparation, it includes the following components in mass content:

[0056] Ba2Ti9O20 55wt%;

[0057] Mg2SiO4 20wt%;

[0058] Low melting point glass powder 25wt%;

[0059] Wherein, the low-melting point glass powder includes the following components by weight:

[0060]

[0061] Ba in this example 2 Ti 9 o 20 A method for preparing a low-temperature co-fired ceramic material comprising the steps of:

[0062] (1) According to the selected mass content ratio, weigh the corresponding weight of BaTiO 3 、TiO 2 , add water (material: water=1:1.2) and ammonium acrylate dispersant (accounting for 0.7wt% of the powder amount) and mix evenly, use a ball mill to pre-mix for 3h, and then use a horizontal sand mill (the grinding medium adopts 0.65 mm zirconium balls) to disperse to obtain a uniformly dispersed slurry;

[0063] (2) U...

Embodiment 2

[0073] Ba in this example 2 Ti 9 o 20 Based on the low-temperature co-fired ceramic material, based on the total amount of raw materials for its preparation, it includes the following components in mass content:

[0074] Ba2Ti9O20 60wt%;

[0075] Mg2SiO4 15wt%;

[0076] Low melting point glass powder 25wt%;

[0077] Wherein, the low-melting point glass powder includes the following components by weight:

[0078]

[0079] Ba in this example 2 Ti 9 o 20 A method for preparing a low-temperature co-fired ceramic material comprising the steps of:

[0080] (1) According to the selected mass content ratio, weigh the corresponding weight of BaTiO 3 、TiO 2 , add water (material: water=1:1.1) and ammonium acrylate dispersant (accounting for 0.5wt% of the powder amount) and mix evenly, use a ball mill to pre-mix for 3h, and then use a horizontal sand mill (the grinding medium adopts 0.65 mm zirconium balls) to disperse to obtain a uniformly dispersed slurry;

[0081] (2) U...

Embodiment 3

[0090] Ba in this example 2 Ti 9 o 20 Based on the low-temperature co-fired ceramic material, based on the total amount of raw materials for its preparation, it includes the following components in mass content:

[0091] Ba2Ti9O20 65wt%;

[0092] Mg2SiO4 20wt%;

[0093] Low melting point glass powder 15wt%;

[0094] Wherein, the low-melting point glass powder includes the following components by weight:

[0095]

[0096] Ba in this example 2 Ti 9 o 20 A method for preparing a low-temperature co-fired ceramic material comprising the steps of:

[0097] (1) According to the selected mass content ratio, weigh the corresponding weight of BaTiO 3 、TiO 2 , add water (material: water=1:1.3) and ammonium acrylate dispersant (accounting for 0.8wt% of the powder amount) and mix evenly, use a ball mill to pre-mix for 3h, and then use a horizontal sand mill (the grinding medium adopts 0.65 mm zirconium balls) to disperse to obtain a uniformly dispersed slurry;

[0098] (2) U...

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Abstract

The invention discloses a Ba2Ti9O20-based low-temperature co-fired glass ceramic material, and the material is prepared from the following components in percentage by mass based on the total amount of preparation raw materials: 55-70wt% of Ba2Ti9O20, 10-20wt% of Mg2SiO4; 10-25 wt% of low-melting-point glass powder; wherein relative to the total weight of the low-melting-point glass powder, the low-melting-point glass powder comprises the following components in parts by weight: 40-48 parts of ZnO; 20-30 parts by weight of B2O3; 10-20 parts by weight of SiO2; 10-15 parts by weight of Al2O3; 0-7 parts by weight of BaO; and 0-5 parts by weight of Li2O. The temperature coefficient of resonance frequency of the low-temperature co-fired glass ceramic material is close to zero, the material loss tangent value is less than 2 * 10 <-3>, the dielectric constant is about 20, and the use requirements of sub6GHz microwave devices are met; and the sintering temperature is low.

Description

technical field [0001] The invention belongs to the technical field of low-temperature co-fired ceramic materials, and in particular relates to a ceramic material with high density, moderate dielectric constant, high quality factor and low resonance frequency coefficient and a preparation method thereof. It can be used to make dielectric filters, duplexers, baluns and other components in the field of electronic communication. Background technique [0002] In recent years, with the rapid development of emerging communication technologies such as 5G and high-density packaging technologies, devices have been developed in the direction of miniaturization, higher integration density, and faster transmission rates. Low-temperature co-fired ceramic technology is the key to realizing this important basis for development. At the same time, materials that can be sintered at low temperature for making components have become a hot direction in the field of material research at home and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/468C04B35/626C04B35/622C04B35/64C03C12/00
CPCC04B35/4686C04B35/62605C04B35/622C04B35/64C03C12/00C04B2235/365C04B2235/3445C04B2235/96
Inventor 宋锡滨刘振锋闫鑫升艾辽东奚洪亮
Owner SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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